ATP is a an important molecule for its major function___________?
Correct answer: A. As an energy currency of the cell
- A. As an energy currency of the cell
- B. As a coenzyme
- C. Both a and b
- D. None of these
Explanation
ATP stores usable chemical energy in its phosphate bonds and transfers that energy to cellular processes, so it is called the energy currency of the cell. It can participate in some enzyme reactions, but its major biological role is energy transfer rather than acting as a coenzyme. Students may choose c by treating every molecule involved in an enzyme reaction as a coenzyme.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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